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Light Visibility (VIS)

DGIF baseline 2026-1, the latest. Earlier baselines: timemap.

RDF: vis.ttl

Name

lightVisibility

Datatype

Enumeration

Definition

The type of specific visibilities of a light based on the light's intensity and ease of recognition.

Accepted

2013-10-18

Defined by

DFDD

Values

• VIS_1 High Intensity
• VIS_2 Low Intensity
• VIS_3 Faint
• VIS_4 Intensified
• VIS_5 Unintensified
• VIS_6 Visibility Deliberately Restricted
• VIS_7 Obscured
• VIS_8 Partially Obscured
• VIS_9 visibleLineOfRange

Used by

• BC040 Maritime Navigation Light
• GB013 Aerodrome Beacon

Source: DGIF 2026-1 QEA model, DGIWG. Standard: DGIWG 206-3. Licence: CC BY 4.0, © DGIWG.